Combination pump and dust receptacle



July 24, 1962 P. L. HAUSER COMBINATION PUMP AND DUST RECEPTACLE Filed June 15 1960 3,045,388 COMBINATION PUMP AND DUST RECEPTACLE Philip L. Hauser, Glenview, 111., assiguor to Root-Lowell Manufacturing (30., Lowell, Mich., a corporation of Ohio Filed June 15, 1960, Ser. No. 36,438

2 Claims. (Cl. 43-147) The present invention relates to a novel pesticidal duster for distributing pesticides, insecticides and the like in dust or powdered form, and to a novel receptacle containing the dust which is purchased separately but adapted for quick and easy attachment to a separable hand pump for dispersing thecontents of the receptacle, said receptacle being readily detached and disposed of when empty whereupon a similar filled receptacle is applied to the pump for dusting.

Hand or manually operated pesticidal dusters operated by an air pump are presently in wide use in which the pump barrel or cylinder is provided with a chamber supplied by the home owner or operator with a quantity of a pesticidal dust and refilled by the operator when the supply is exhausted, or to the pump is affixed a dust container which is refilled from another container by the operator when the supply is exhausted. In view of the poisonous character of many of the dusts now being used, home owners or operators, usually inexperienced, must exercise considerable caution in refilling these barrels or containers from an available supply. I

In the present invention the operator purchases a filled and sealed receptacle supplied by the manufacturer of the pesticidal dust with a specified quantity thereof and upon removing its cap the hand pump is quickly and easily attached to the receptacle and the assembled unit is then ready for the dusting operation.

It is, therefore, an important object of the present invention to provide a novel air pump and dust receptacle so designed, constructed and combined as to facilitate their assembly without spillage or danger to the operator and when assembled, ready for immediate operation.

Unlike prior devices where a permanent type dust container is employed or the pump container has a chamber to be manually filled with the dust, the present dust receptacle is disposed of when empty and a similar filled receptacle as purchased from a supplier is quickly and easily assembled for use. In the novel receptacle is embodied a discharge tube having a discharge port disposed at the upper side of the receptacle when dusting.

Another important object of the present invention is the provision of a novel packaged dust receptacle available for purchase separately from a supplier of pesticidal dusts and which receptacle is readily removed and disposed of when the supply of dust has been exhausted, the hand pump and receptacle being so constructed that the pump is Quickly and easily attached to a receptacle and the receptacle readily removed for disposal and replacement by a new receptacle. This completely eliminates the necessity for refilling a container in or on the pump as previously contemplated, and also avoids the possibility of spillage and danger to the operator where a poisonous dust is to be applied to flowers, shrubbery or other areas where pesticidal dust is to be disseminated.

As the quantity of pesticidal dust in the novel receptacle is accurately measured, the home owner, truck gardener or other operator can readily follow the manufacturers directions as to a given area capableof being eflectively dusted by a prescribed quantity of the dust.

Further objects are to provide a construction of maximum simplicity, efiiciency, economy andease of assembly and operation, and such further objects, advantages and capabilities as will later more fully appear and are inherently possessed thereby.

In the drawing:

FIGURE 1 is a top plan view of the novel combination air pump and dust receptacle assembled and ready for use.

FIG. 2 is a fragmentary enlarged view of the assembly, the view being taken approximately on the line 22 of FIG. 1 and viewed in the direction of the arrows.

FIG. 3 is a view in vertical cross section taken on the line 3-3 of FIG. 2. and viewed in the direction of the arrows, the view being on a reduced scale from that of FIG. 2.

Referring to the detailed disclosure in the drawing, the novel illustrative embodiment of the combined pump and dust receptacle comprises an air pump 10 and a relatively large receptacle 11 containing a quantity of a pesticidal dust or powder 12. This filled receptacle is purchased separately but designed for ready attachment to and detachment from the discharge end of the pump barrel 13.

The novel air pump 10 comprises the pump barrel or cylinder 13 in which a plunger or piston 14 is affixed to one end of a piston rod 15 mounted for sliding or reciprocatory movement in an aligned opening in an end closure 16 and upon the piston rod is mounted a washer 17. The end closure 16 may be of wood or any desired composition. The plunger preferably comprises a leather cup 18 mounted in operative position on the inner end of the piston rod 15 between a washer 19 abutting an enlargement 20 on the extreme end of the rod and a larger washer or metal plate 21 seating against and in contact with substantially the entire surface area of the base of the leather cup 18 and between it and embossments 22 on the piston rod, whereby the leather cup 18 is securely retained in operative position on the inner end of the piston rod 15.

The forward end 23 of the pump barrel 12 is of enlarged diameter and joined by a tapered portion 24 with the remainder of the barrel which is of uniform diameter. This enlarged tapered portion 24 permits the cup leather 18 to be expanded thereat when reaching the end of its forward stroke with the forward stroke of the piston rod being limited by the washer 17 and embossments 25 on the piston rod 14 adapted to abut the washer 17. A hole 26 in the rear of the barrel adjacent the end closure 16 provides an opening to the atmosphere whereby on the rearward or suction stroke of the pump plunger operated by withdrawing or rearward pull on the handle 27, air is drawn into the barrel 13 and flows past the leather cup 18 into the pump chamber in front of the plunger, and on the forward or pressure stroke this air under pressure is forced outwardly through an end cap assembly 28 at the forward end of the pump barrel 13.

The end cap assembly 28 comprises a cup part 29 securely affixed or spun onto the forward enlarged end 23 of the pump barrel 13 and anchored thereto by an over.- lapping and rearwardly bent flange at 30 with the anchored part having a tubular neck portion 31 having an internal thread and a transverse, dished partition 32 having plural spaced apertures at 33 for the passage of air under pressure from the interior or air chamber of the barrel 13 upon the forward or pressure stroke. Disposed forwardly or outwardly of the partition 32 but within the cup part 29 of the end cap assembly 28 is a convex or domed part 34 having a peripheral flange 35 abutting an annular flat surface on the .end cap 28. A sealing washer 36 seats against the peripheral flange 35. The domed part 34 has a centrally arranged discharge opening 37 through which the air under pressure entering the space 38 from the pump barrel is discharged.

ber, preferably of natural or compounded synthetic rubber, which is anchored centrally in position by a rivet or other anchoring means 40 aflixed to the partition 32 and of a size or diameter to cover the spaced apertures 33. Due to the flexibility of the one-way valve member 39, it opens upon the down or forward stroke and automatically closes on the back or suction stroke whereby to prevent any backflow of dust 12 into the pump from the receptacle 11.

The dust receptacle 11 comprises a container of a size for economically packaging a pesticidal or insecticidal dust by the manufacturer of such products. The home owner or user having purchased one of the novel filled receptacles of the present invention, is merely required to unscrew and remove the cap (not shown) from the threaded neck 41 opening into the receptacle and attach thereto the internally threaded end 31 of the pump barrel 13 with the sealing washer 36 effecting sealing contact therebetween.

In the filled receptacle 11 as purchased, there is provided a discharge tube 42 open at one end 43 through the base 44 of the receptacle to the atmosphere and its other end stopping short of the other end 45 of the receptacle for passage and discharge of the dust particles under air pressure generated by the pump. This openended discharge tube '42 is disposed eccentrically in the receptacle and, when the assembled duster is operated, the open end 43 thereof is disposed uppermost as shown in FIGS. 1 and 2. This open end 43 is retained closed by a piece of adhesive or by an suitable sealing means until ready for use.

The size or area of the discharge port or opening 37 in the domed plate 34 is somewhat less than the aggregate of the areas of the apertures 33 in the partition 32 for most effective operation.

From the above disclosure, it will be evident that the present invention comprehends the combination of a novel air pump for detachable mounting upon a novel dust receptacle for disseminating pesticidal, insecticidal or other dust contained in said receptacle. In this novel assembly, the pump is intended for repeated use while the novel receptacle when emptied of its contents is thrown away and the user purchases another similar dust receptacle for attachment to the pump. In this manner, the user need not transfer the dust from one container to another or to the dust chamber of the barrel, so that any danger involved in the use of pesticidal dust is greatly minimized.

Having thus disclosed the invention, I claim.

1. A combined air pump and dust receptacle for the dissemination of pesticidal dust, comprising a disposable dust receptacle initially filled and sealed with a predetermined measured quantity of said dust and having means for ready attachment to and detachment from the discharge end of an air pump, said dust receptacle provided with a top and a base, a threaded neck projecting from its top, said base having a discharge opening offset from its center, a discharge tube longitudinally and eccentrically mounted within said receptacle and of a length less than that of the depth of said receptacle, said tube having one end communicating with said discharge opening in the base and the other end of the tube spaced from the interior of the top to provide an inlet opening into the dust receptacle for the entrance and passage to discharge of airborne dust, said air pump including a pump barrel having an enlarged discharge end and internally threaded end cap assembly mounted within said enlarged end and including a part providing an inner partition having a forwardly projecting internally threaded neck portion afiixed at its outer end to the enlarged end of the barrel, and a convex end plate spaced forwardly of said partition to provide an air chamber therebetween, said partition having one or more small apertures and a check valve controlling air flow through said apertures, said convex end plate provided with a central port through which air under pressure is directed for discharge from said pump into the dust receptacle in spaced relation from the inlet end of said discharge tube, the threaded neck of said dust receptacle being detachably mounted in the internally threaded end cap assembly of the air pump.

2. A combined air pump and dust receptacle for the dissemination of pesticidal dust, comprising a disposable dust receptacle initially filled and sealed with a predetermined measured quantity of said dust and having means for ready attachment to and detachment from the discharge end of an air pump, said dust receptacle having a top provided with a threaded neck for receiving a cap and the bottom with an eccentrically located opening sealed until the receptacle is ready for use, a discharge tube eccentrically mounted wholly within said receptacle and connected at one end with said opening and its opposite inlet end extending adjacent to but spaced from the inner surface of the top and thereat open for free access of the dust from the receptacle, said air pump having a pump barrel provided with an internally threaded end cap assembly including a part providing an inner dished partition having spaced apertures for the passage of air under pressure from the pump barrel, a non-return valve on said partition controlling flow through said apertures, a convex member spaced from said partition to provide an air chamber therebetween with said member having a central discharge port through which air under pressure is directed for discharge from said pump into the dust receptacle in spaced relation from the inlet end of said discharge tube.

References Cited in the file of this patent UNITED STATES PATENTS 297,693 Isaacsen Apr. 29, 1884 2,226,013 Oys Dec. 24, 1940 2,252,994 Tench Aug. 19, 1941 2,658,301 Merrill Nov. 10, 1953 

